GETTING STARTED Speed minds modelers have written want know what neeessary get sport Bill Nusz Lancaster CA has offered share thoughts subject feel cov ers what necessary get started suspect people reading column interested Control Line Speed active Speed fliers cases due think uncertainty to get started misconceptions about difficult fly events Speed has positive aspects make very pleasant event compete First models last long time important factor have limited building time Although flying skill factor Speed does require very long hours practice Stunt Combat Speed does require practice build team work Racing events contest flights move pace set rigid schedule imposed need fin ish heat elimination structure succeed flying Speed have found philosophy emphasizing consistency results best performance can repeat per forinance time possible measure quantiI effects changes ap proach event logical fashion can fielding very competitive entry within year starting event first thing must pick class lay out program will achieve three goals 1 Teach fly Speed model 2 Get competitive model built 3 able fly consistently contest deciding what class start several considerations primary what think want fly Listed some pluses minuses class Half-A Speed Pro Light small Con Competitive engines commercially avail able build own hard fly hard build due small size Speed Pro Competitive engines com mercially available light pull lines long-lived engines Con Few negatives B Speed Pro Convenient building sizes good fliers moderate pull lines Con Engines/pipes hard find engines less durable class D Speed Pro Competitive engines commer cially available easy fly convenient building size Con Fiberglass props nearly mandatory en gine durability problem pulls hard lines Jet Speed Pro Easy build easy fly very durable engines equipment readily avail able Con Pulls hard lines high fuel bills Very high noise levelEd FAI Speed Pro Standard inexpensive fuel long engine life equipment commercially avail able engines commercially available Con Fast ones hard fly pilot has turn around very fast Formula 40 Pro Standard fuel landing gear required easily available engines least ex pensive minipipe Con Few disadvantages personal opinion start can made class except possibly 1/2A highest probability success will come D Jet F-40 Once have picked class next task construct trainer purpose trainer learn fly relatively high wing loading under circumstances simulate encoun tered flying full-up Speed model secondary objective gain experience engine fuel system good Speed trainer Texas Quickie Rat published August 1986 sue Model Aviation available Full-Size Plan No 524 $2 75Ed Build per plans install appropriate control system class allows Monoline single-line con trol urge put such system trainer learn fly single-line system worth increase several miles per hour class stronger safer two lines easier install airplane easier fly especially D Jet classes pull hard engine use high-performance 40 equipped fuel exhaust system class requires plan use B Id use suction uniflow-type tank full tuned pipe F-40 D Id use either pres sure tank bladder whichever prefer ence flying trainer start out 031 x 60-ft Monoline 018 x 60-ft two-line After flying normally becomes simple task start fly ing pylon Finally flying py lon second nature start shortening lines until rotational speed time takes follow model through lap approxi mately same intended class follows Aseven laps/l05 see Bsix laps/95 see Dsix laps/9O see Jetsix laps/90 see F-40seven laps/Il sec FAIlO laps/15 see selecting design/setup Competi tion model consistency important el ement considered basic elements right good performance will naturally follow Three basics good Speed model First solid engine mounting second reli able consistent fuel system third stable fly ing characteristics requirement solid engine mount ing easily met use full metal pan construction Use full pan top sur face accurately trued accu rately located mounting holes provides solid mounting required engine reach full power reliable fuel system can provided several ways classes use full tuned pipe suction uniflow setup seems best solution classes minipipes either hard tank bladder will work well choice between two mostly function whether have reliable teammate can either set needle fly hard tank using untimed crankcase pressur ization has advantage allowing preset nee dle valve pit crew needs start model let go also possible hard tank adjust needle valve given amount between flights disadvantages may sometimes encounter problems fuel foaming surging takeoff Continued page 167 76 Model Aviation Control Line Speed Gene Hempel 301 N Yale Dr Garland TX 75042 Carol Sugar Lakeland FL new FAI Speed planea Rossi 15-powered asym metrical-winged sidewinder member Polk County RC Club Hope dont expel him building CL model Tom Blankmann Stuart FL holds two ver sions Formula 40 Speed plane Fred Joyce Margarido Freemont CA Small ST 40-powered Large new OPS 65-powered 0 Speed ship uses K&B 65 engine tion competitors need stay alert aware options Listen learn After flying Old-Time Stunt blustery morning weather Saturday Expert competitors hung around try sort out com bination would work similar condi tions predicted next day high winds cool temps settled depitched three-blade Holly prop rich ground needle setting using suction rather uniflow setup allowed controlled speed beginning pattern reduced windup con secutive maneuvers below 450 elevation also allowed engine pick up speed tank emptied power available during verticals overheads Clover too setup working neatly packed up went Out dinner Unfortunately caine time fly first round Sunday wind died completely temperature also much warmer Paul Walker went up first suffered through dead-air flight turned out high scorer nonetheless flew right after Paul should have learned something Unfortunately did slightly lean enginewhich overcame its natural tendency richen rising tempera ture didnt tweak nearly enough produce additional airspeed necessary overcome calm air resulted situations judges ran helter-skelter trying guess might choose fly next maneuver idea myselfi result bunch extra level laps flameout clo ver bottom line 50 points behind top seed official flight go key word last sentence offi cial Heres really screwed up first up second round done quick dirty retrln suit still air prop pitch leaner needle setting worked great during lunch break felt confident could get back hunt good flight guessed Time flyand down goes sun up goes wind splash comes rain foolishiy went ahead took off after shaking head disgust clear rain out eyes signaled ficial wasted last flight conditions entirely unpreparedand under no chance overcoming Pauls lead two opportunities avoid blowing chances First could have called attempt before starting Second after taking off could have waved off flight once became ob vious conditions unacceptable either case would have moved down two places flight order time either regroup await return calmer conditions Remember AMA rule book allows three attempts two official flights youre po sition absolutely positively have nail dont put nail coffin Swal low pride call attempt come back prepared CL Speed/Hempel Continued page 76 Bladder tanks light have no problems fuel foaming surging easy con struct suffer disadvantage requiting good hand needle valve believe no speed advantage either way current Class D model has run over 200 mph both types tank Stable flying characteristics function design adequate moment arms areas UU I I U U U U U U U U U U U U U U U U U U U U U U U U U U U U I I U U SIG GLOW FUEL MANUFACTURED WITH THE PUREST FINEST QUALITY INGREDIENTS AVAILABLEI * Superior Igniters Improve starting idle acceleration Youll notice power bargain fuels * Special Detergents Promote clean burning preventU residue buildup * Rust Inhibitors Protect engines corrosion After run oil needed enginesI *I *U Film Strength Additives Increase lubricity provide extra lean run protection Anti-Wear Additives Help keep engines running peak performance longer * Satisfaction Guaranteed SIG CHAMPION 2-STROKE FUEL FREIGHT FREE SHIPPINGON ORDERS OVER$1500 ECT PINTQUARTGALLON55 GAL DRUM 0% Nitromethane$315$450$1075 95 5% Nitromethane$365$525$1275 95 10% Nitromethane$415$550$1475 95 15% Nitromethane$430$635$1675 95 25% Nitromethane$515$795$2195 95 35% Nitromethane $595 $925 $2695 $66995 SIGPREMIUM 4-STROKE FUEL 10% Nitromethane 5 $29995 15% Nitromethane 5 $36495I THE CHOICE OF CHAMPION FLYERS over 20 years SIG has blending finest quality model engine fuel available using finest quality ingredients instance Methanol use 995% pure very best gradeU money can buy also use real 100% pure INitromethane get full measure youveI paid based honest percentage-of-volume Imethod percentage weight SIG fuels conBakers purest AA Castor Oil tam 50-50 blend new improved Klotz Techniplate Synthetic Racing Oil maximum engine lubrication protection Based experience sincerely believe finest quality fuel can made price dont take word try some judge Uyourself lPioeo toOject ohengeothoot notice See dealer first available order direct Call 800-247-5008 toll free orders Latest Catalog $300 MANUFACTURING CO Montezuma IA 50171 SPECIAL FOR THIS ISSUE ONL Y JLC Kit #31JA LANE SPECIAL Kit #32 Fully Aerobatic Complete Kit .Great Around Plane compi Kit 5795 X100% 3995 Money Back Guarantee 60 wing 41 iength 830 sq wing area715 wing 58 length 930 sq wing area 4860 engine 8090 four stroke 4 iba 5 oz. 4 channei4840 engine 60-90 four stroke 6 be. 4 chennei Bolt kite feature formed cowiing pre-bent ending gear hardware canopy die-cot 8 pre-cut pant fuli aize pians compiete instruction book Send check MO piane choice Pdce inciudet shipping 8-handling coo shipments aiso avaiisbie Mon-Fri 900-700 900-200 iCSTi 314-928-777 Skyline Hobbys Mfg 49 Treebeard Circle St Charles MO 63303 September 1988 167 balance combination construction em phasize accurate alignments good technique control system installation An excellent example good design practice Pink Lady Formula 40 presented De cember 1987 issue Model Aviation Full-Size Plan No 573$4 Engine selection preparation real heart competition setup Current Speed en gines competitive basic design days Speed secret long past secrets making strong engine 1 Freerunning crankshaft good bearings 2 Prop erly fitted piston sleeve 3 Good cylinder head fit 4 Accurately fitted free-running disk rotor rear-intake engines basics right engine fed right amount fuel will make competi tive amount power equipment pro cesses check andif necessarycorrect items beyond scope article several individuals business en gine tuning will set up engine have found engines generally pretty close being right come out box services engine specialists needed rebuild time comes list commonly used Speed en gines includes A/FAI Speed OPS 15 Rossi 15 Mk Ill K&B/Cox 15 Conquest Supertigre X-l5 RI cur rent AMA class record-holder B Speed OPS 29 Supertigre X-29 current AMA class record-holder K&B 49 RI D Speed 05 65 VR DF current AMA class record-holder K&B 65 OPS 65 Ducted Fan Picco 65 Ducted Fan Rossi 65 Ducted Fan F-40 Speed OS 40 VR-P K&B 65 Picco 40 RI/RE Supertigre X-40 RI current AMA class record-holder Jet Speed Dyna-Jet current AMA class record-holder fuel engines no se crets piston engines three basic ingredi ents methanol nitromethane oil Jets two basics nitromethane propy lene oxide Typical fuel formulas given low Break-in/test/F-40 40% methanol 40% nitromethane 20% oil 10% synthetic plus 10% castor Contest piped engines classes B 15% methanol 65% nitromethane 20% oil 17% synthetic plus 3% castor Contest class D 0%-5% methanol 75%80% nitromethane 20% oil 17% synthetic plus 3% castor Jet 50% nitromethane 50% propylene oxide recommend using less 20% oil piston engines possible run less smallest mistake setting needle too lean will likely result damaged en gine also really like use castor oil com bination synthetic pil produces sig nificant extra protection primarily connect ing rod/crankpin bearing preceding discussion have skipped over Jets mostly because basics bit dif ferent essentially engine use Dyna-Jet stock form has re mained essentially unchanged since 1948 HoW ever engine/event Speed secret alive well Jet preferred class suggest follow trainer route recip-engine classes using Phire Phart published column August 1986 issue trainer trainer use stock engine fuel mix 80% methanol 20% methyl ethyl ke tone MEK After can fly pylon etc start experimenting high-lift valve re tainers nitromethane/propylene oxide fuel stock Dyna-Jet nitro/propylene using re tainer 06 over stock will run about 170 mph want go really fast Jet best information have found Super Burp con struction article December 1978 Model Avi ation final observation best investment can make starting Speed join North American Speed Society publishes quarterly newsletter Speed Times ab solute gold information model design engine setup parts/hardware supply sources Membership Open members $20/year address North American Speed Society Box 82294 North Bumaby BC Canada V5C 5P7 thanks Bill Nusz taking time spending effort necessary give us very enlightening observations Have funfly Speed ternfic how-to description steps take setting up stock engine top performance Bill Hagers RC Pylon Racing column month Although addresses Sport Pylon Racing information perfectly good CL Speed too RMcM CL Racing/Ballard Continued page 77 ture / plywood will note bellcrank off center pushrod coming down centerline winga necessity internally mounted elevator controls PRODUCTS FOR THE DI$CERNNG MODELER Complete Line Exhaust Systems * Tuned Pipes led Tuned Pipes * Headers Venturi Mufflers Expansion Mufflers copter Ball Mufflers * Specialized Exhaust Systems Unsurpassed Wn C Another photos shows wing mounted fuselage /16 plywood applied over entire frontal section back almost rear wing addition can see pushrod passing through fuselage enclosed alu mmum tube elevator horn attached right below stab Half-A glow plug clip have shown ex cellent hot thumb can made very quickly inexpensively addition brass strip soldered typical Cox VzA glow plug clip addition washer soldered bottom added brass strip aid provid ing positive location plugs center post particular unit can also used Scale Rac ing addition Mouse Performance results have just received some Racing time results recent meet Califor nia show Scale Race times 557 10 first-placer Mike Shahan 61184 secondplace Bill Lee Rat Race saw spectacular 43092 win 50513 second place both being Shahan-Fogg entries AMA Slow Rat showed Fox/Repp team winning 81020 Bill Lee second 81778 John MeCollum also included West Coasts recent Sebree Hayes Memorial AAA Meet Scale Racing won Vic Gamer time 61350 Mike Shahan second 62190 Rat Race won Bob Fogg 44684 Howard Shahan came next 45060 Slow Rat some sparkling times led Vie Garner 60863 Fox/Repp team 63560 Good piloting techniques am enclosing two photographs recent California contest lot three-up flying photo shows three pilots John McCollum ready pass Dave Brown Note John has come up behind him starting ralse fly ing hand up get clear Daves head smaller pilots essence trapped hind taller pilots hand extremely low As comes up behind taller pilot should ralse flying hand up near bead bring alrcraft over minimum amount speed loss smooth pass other photo shows three pilots pi lot left actually blocking other two Bob Kerr wearing Livermore Flyer shirt way behind planenote over left However hand behind Howard Sha han should up over top head plane will catch up properly manmum time alrspeed loss arm position shown actually slowing drag168 Model Aviation
Edition: Model Aviation - 1988/09
Page Numbers: 76, 167, 168
GETTING STARTED Speed minds modelers have written want know what neeessary get sport Bill Nusz Lancaster CA has offered share thoughts subject feel cov ers what necessary get started suspect people reading column interested Control Line Speed active Speed fliers cases due think uncertainty to get started misconceptions about difficult fly events Speed has positive aspects make very pleasant event compete First models last long time important factor have limited building time Although flying skill factor Speed does require very long hours practice Stunt Combat Speed does require practice build team work Racing events contest flights move pace set rigid schedule imposed need fin ish heat elimination structure succeed flying Speed have found philosophy emphasizing consistency results best performance can repeat per forinance time possible measure quantiI effects changes ap proach event logical fashion can fielding very competitive entry within year starting event first thing must pick class lay out program will achieve three goals 1 Teach fly Speed model 2 Get competitive model built 3 able fly consistently contest deciding what class start several considerations primary what think want fly Listed some pluses minuses class Half-A Speed Pro Light small Con Competitive engines commercially avail able build own hard fly hard build due small size Speed Pro Competitive engines com mercially available light pull lines long-lived engines Con Few negatives B Speed Pro Convenient building sizes good fliers moderate pull lines Con Engines/pipes hard find engines less durable class D Speed Pro Competitive engines commer cially available easy fly convenient building size Con Fiberglass props nearly mandatory en gine durability problem pulls hard lines Jet Speed Pro Easy build easy fly very durable engines equipment readily avail able Con Pulls hard lines high fuel bills Very high noise levelEd FAI Speed Pro Standard inexpensive fuel long engine life equipment commercially avail able engines commercially available Con Fast ones hard fly pilot has turn around very fast Formula 40 Pro Standard fuel landing gear required easily available engines least ex pensive minipipe Con Few disadvantages personal opinion start can made class except possibly 1/2A highest probability success will come D Jet F-40 Once have picked class next task construct trainer purpose trainer learn fly relatively high wing loading under circumstances simulate encoun tered flying full-up Speed model secondary objective gain experience engine fuel system good Speed trainer Texas Quickie Rat published August 1986 sue Model Aviation available Full-Size Plan No 524 $2 75Ed Build per plans install appropriate control system class allows Monoline single-line con trol urge put such system trainer learn fly single-line system worth increase several miles per hour class stronger safer two lines easier install airplane easier fly especially D Jet classes pull hard engine use high-performance 40 equipped fuel exhaust system class requires plan use B Id use suction uniflow-type tank full tuned pipe F-40 D Id use either pres sure tank bladder whichever prefer ence flying trainer start out 031 x 60-ft Monoline 018 x 60-ft two-line After flying normally becomes simple task start fly ing pylon Finally flying py lon second nature start shortening lines until rotational speed time takes follow model through lap approxi mately same intended class follows Aseven laps/l05 see Bsix laps/95 see Dsix laps/9O see Jetsix laps/90 see F-40seven laps/Il sec FAIlO laps/15 see selecting design/setup Competi tion model consistency important el ement considered basic elements right good performance will naturally follow Three basics good Speed model First solid engine mounting second reli able consistent fuel system third stable fly ing characteristics requirement solid engine mount ing easily met use full metal pan construction Use full pan top sur face accurately trued accu rately located mounting holes provides solid mounting required engine reach full power reliable fuel system can provided several ways classes use full tuned pipe suction uniflow setup seems best solution classes minipipes either hard tank bladder will work well choice between two mostly function whether have reliable teammate can either set needle fly hard tank using untimed crankcase pressur ization has advantage allowing preset nee dle valve pit crew needs start model let go also possible hard tank adjust needle valve given amount between flights disadvantages may sometimes encounter problems fuel foaming surging takeoff Continued page 167 76 Model Aviation Control Line Speed Gene Hempel 301 N Yale Dr Garland TX 75042 Carol Sugar Lakeland FL new FAI Speed planea Rossi 15-powered asym metrical-winged sidewinder member Polk County RC Club Hope dont expel him building CL model Tom Blankmann Stuart FL holds two ver sions Formula 40 Speed plane Fred Joyce Margarido Freemont CA Small ST 40-powered Large new OPS 65-powered 0 Speed ship uses K&B 65 engine tion competitors need stay alert aware options Listen learn After flying Old-Time Stunt blustery morning weather Saturday Expert competitors hung around try sort out com bination would work similar condi tions predicted next day high winds cool temps settled depitched three-blade Holly prop rich ground needle setting using suction rather uniflow setup allowed controlled speed beginning pattern reduced windup con secutive maneuvers below 450 elevation also allowed engine pick up speed tank emptied power available during verticals overheads Clover too setup working neatly packed up went Out dinner Unfortunately caine time fly first round Sunday wind died completely temperature also much warmer Paul Walker went up first suffered through dead-air flight turned out high scorer nonetheless flew right after Paul should have learned something Unfortunately did slightly lean enginewhich overcame its natural tendency richen rising tempera ture didnt tweak nearly enough produce additional airspeed necessary overcome calm air resulted situations judges ran helter-skelter trying guess might choose fly next maneuver idea myselfi result bunch extra level laps flameout clo ver bottom line 50 points behind top seed official flight go key word last sentence offi cial Heres really screwed up first up second round done quick dirty retrln suit still air prop pitch leaner needle setting worked great during lunch break felt confident could get back hunt good flight guessed Time flyand down goes sun up goes wind splash comes rain foolishiy went ahead took off after shaking head disgust clear rain out eyes signaled ficial wasted last flight conditions entirely unpreparedand under no chance overcoming Pauls lead two opportunities avoid blowing chances First could have called attempt before starting Second after taking off could have waved off flight once became ob vious conditions unacceptable either case would have moved down two places flight order time either regroup await return calmer conditions Remember AMA rule book allows three attempts two official flights youre po sition absolutely positively have nail dont put nail coffin Swal low pride call attempt come back prepared CL Speed/Hempel Continued page 76 Bladder tanks light have no problems fuel foaming surging easy con struct suffer disadvantage requiting good hand needle valve believe no speed advantage either way current Class D model has run over 200 mph both types tank Stable flying characteristics function design adequate moment arms areas UU I I U U U U U U U U U U U U U U U U U U U U U U U U U U U U I I U U SIG GLOW FUEL MANUFACTURED WITH THE PUREST FINEST QUALITY INGREDIENTS AVAILABLEI * Superior Igniters Improve starting idle acceleration Youll notice power bargain fuels * Special Detergents Promote clean burning preventU residue buildup * Rust Inhibitors Protect engines corrosion After run oil needed enginesI *I *U Film Strength Additives Increase lubricity provide extra lean run protection Anti-Wear Additives Help keep engines running peak performance longer * Satisfaction Guaranteed SIG CHAMPION 2-STROKE FUEL FREIGHT FREE SHIPPINGON ORDERS OVER$1500 ECT PINTQUARTGALLON55 GAL DRUM 0% Nitromethane$315$450$1075 95 5% Nitromethane$365$525$1275 95 10% Nitromethane$415$550$1475 95 15% Nitromethane$430$635$1675 95 25% Nitromethane$515$795$2195 95 35% Nitromethane $595 $925 $2695 $66995 SIGPREMIUM 4-STROKE FUEL 10% Nitromethane 5 $29995 15% Nitromethane 5 $36495I THE CHOICE OF CHAMPION FLYERS over 20 years SIG has blending finest quality model engine fuel available using finest quality ingredients instance Methanol use 995% pure very best gradeU money can buy also use real 100% pure INitromethane get full measure youveI paid based honest percentage-of-volume Imethod percentage weight SIG fuels conBakers purest AA Castor Oil tam 50-50 blend new improved Klotz Techniplate Synthetic Racing Oil maximum engine lubrication protection Based experience sincerely believe finest quality fuel can made price dont take word try some judge Uyourself lPioeo toOject ohengeothoot notice See dealer first available order direct Call 800-247-5008 toll free orders Latest Catalog $300 MANUFACTURING CO Montezuma IA 50171 SPECIAL FOR THIS ISSUE ONL Y JLC Kit #31JA LANE SPECIAL Kit #32 Fully Aerobatic Complete Kit .Great Around Plane compi Kit 5795 X100% 3995 Money Back Guarantee 60 wing 41 iength 830 sq wing area715 wing 58 length 930 sq wing area 4860 engine 8090 four stroke 4 iba 5 oz. 4 channei4840 engine 60-90 four stroke 6 be. 4 chennei Bolt kite feature formed cowiing pre-bent ending gear hardware canopy die-cot 8 pre-cut pant fuli aize pians compiete instruction book Send check MO piane choice Pdce inciudet shipping 8-handling coo shipments aiso avaiisbie Mon-Fri 900-700 900-200 iCSTi 314-928-777 Skyline Hobbys Mfg 49 Treebeard Circle St Charles MO 63303 September 1988 167 balance combination construction em phasize accurate alignments good technique control system installation An excellent example good design practice Pink Lady Formula 40 presented De cember 1987 issue Model Aviation Full-Size Plan No 573$4 Engine selection preparation real heart competition setup Current Speed en gines competitive basic design days Speed secret long past secrets making strong engine 1 Freerunning crankshaft good bearings 2 Prop erly fitted piston sleeve 3 Good cylinder head fit 4 Accurately fitted free-running disk rotor rear-intake engines basics right engine fed right amount fuel will make competi tive amount power equipment pro cesses check andif necessarycorrect items beyond scope article several individuals business en gine tuning will set up engine have found engines generally pretty close being right come out box services engine specialists needed rebuild time comes list commonly used Speed en gines includes A/FAI Speed OPS 15 Rossi 15 Mk Ill K&B/Cox 15 Conquest Supertigre X-l5 RI cur rent AMA class record-holder B Speed OPS 29 Supertigre X-29 current AMA class record-holder K&B 49 RI D Speed 05 65 VR DF current AMA class record-holder K&B 65 OPS 65 Ducted Fan Picco 65 Ducted Fan Rossi 65 Ducted Fan F-40 Speed OS 40 VR-P K&B 65 Picco 40 RI/RE Supertigre X-40 RI current AMA class record-holder Jet Speed Dyna-Jet current AMA class record-holder fuel engines no se crets piston engines three basic ingredi ents methanol nitromethane oil Jets two basics nitromethane propy lene oxide Typical fuel formulas given low Break-in/test/F-40 40% methanol 40% nitromethane 20% oil 10% synthetic plus 10% castor Contest piped engines classes B 15% methanol 65% nitromethane 20% oil 17% synthetic plus 3% castor Contest class D 0%-5% methanol 75%80% nitromethane 20% oil 17% synthetic plus 3% castor Jet 50% nitromethane 50% propylene oxide recommend using less 20% oil piston engines possible run less smallest mistake setting needle too lean will likely result damaged en gine also really like use castor oil com bination synthetic pil produces sig nificant extra protection primarily connect ing rod/crankpin bearing preceding discussion have skipped over Jets mostly because basics bit dif ferent essentially engine use Dyna-Jet stock form has re mained essentially unchanged since 1948 HoW ever engine/event Speed secret alive well Jet preferred class suggest follow trainer route recip-engine classes using Phire Phart published column August 1986 issue trainer trainer use stock engine fuel mix 80% methanol 20% methyl ethyl ke tone MEK After can fly pylon etc start experimenting high-lift valve re tainers nitromethane/propylene oxide fuel stock Dyna-Jet nitro/propylene using re tainer 06 over stock will run about 170 mph want go really fast Jet best information have found Super Burp con struction article December 1978 Model Avi ation final observation best investment can make starting Speed join North American Speed Society publishes quarterly newsletter Speed Times ab solute gold information model design engine setup parts/hardware supply sources Membership Open members $20/year address North American Speed Society Box 82294 North Bumaby BC Canada V5C 5P7 thanks Bill Nusz taking time spending effort necessary give us very enlightening observations Have funfly Speed ternfic how-to description steps take setting up stock engine top performance Bill Hagers RC Pylon Racing column month Although addresses Sport Pylon Racing information perfectly good CL Speed too RMcM CL Racing/Ballard Continued page 77 ture / plywood will note bellcrank off center pushrod coming down centerline winga necessity internally mounted elevator controls PRODUCTS FOR THE DI$CERNNG MODELER Complete Line Exhaust Systems * Tuned Pipes led Tuned Pipes * Headers Venturi Mufflers Expansion Mufflers copter Ball Mufflers * Specialized Exhaust Systems Unsurpassed Wn C Another photos shows wing mounted fuselage /16 plywood applied over entire frontal section back almost rear wing addition can see pushrod passing through fuselage enclosed alu mmum tube elevator horn attached right below stab Half-A glow plug clip have shown ex cellent hot thumb can made very quickly inexpensively addition brass strip soldered typical Cox VzA glow plug clip addition washer soldered bottom added brass strip aid provid ing positive location plugs center post particular unit can also used Scale Rac ing addition Mouse Performance results have just received some Racing time results recent meet Califor nia show Scale Race times 557 10 first-placer Mike Shahan 61184 secondplace Bill Lee Rat Race saw spectacular 43092 win 50513 second place both being Shahan-Fogg entries AMA Slow Rat showed Fox/Repp team winning 81020 Bill Lee second 81778 John MeCollum also included West Coasts recent Sebree Hayes Memorial AAA Meet Scale Racing won Vic Gamer time 61350 Mike Shahan second 62190 Rat Race won Bob Fogg 44684 Howard Shahan came next 45060 Slow Rat some sparkling times led Vie Garner 60863 Fox/Repp team 63560 Good piloting techniques am enclosing two photographs recent California contest lot three-up flying photo shows three pilots John McCollum ready pass Dave Brown Note John has come up behind him starting ralse fly ing hand up get clear Daves head smaller pilots essence trapped hind taller pilots hand extremely low As comes up behind taller pilot should ralse flying hand up near bead bring alrcraft over minimum amount speed loss smooth pass other photo shows three pilots pi lot left actually blocking other two Bob Kerr wearing Livermore Flyer shirt way behind planenote over left However hand behind Howard Sha han should up over top head plane will catch up properly manmum time alrspeed loss arm position shown actually slowing drag168 Model Aviation
Edition: Model Aviation - 1988/09
Page Numbers: 76, 167, 168
GETTING STARTED Speed minds modelers have written want know what neeessary get sport Bill Nusz Lancaster CA has offered share thoughts subject feel cov ers what necessary get started suspect people reading column interested Control Line Speed active Speed fliers cases due think uncertainty to get started misconceptions about difficult fly events Speed has positive aspects make very pleasant event compete First models last long time important factor have limited building time Although flying skill factor Speed does require very long hours practice Stunt Combat Speed does require practice build team work Racing events contest flights move pace set rigid schedule imposed need fin ish heat elimination structure succeed flying Speed have found philosophy emphasizing consistency results best performance can repeat per forinance time possible measure quantiI effects changes ap proach event logical fashion can fielding very competitive entry within year starting event first thing must pick class lay out program will achieve three goals 1 Teach fly Speed model 2 Get competitive model built 3 able fly consistently contest deciding what class start several considerations primary what think want fly Listed some pluses minuses class Half-A Speed Pro Light small Con Competitive engines commercially avail able build own hard fly hard build due small size Speed Pro Competitive engines com mercially available light pull lines long-lived engines Con Few negatives B Speed Pro Convenient building sizes good fliers moderate pull lines Con Engines/pipes hard find engines less durable class D Speed Pro Competitive engines commer cially available easy fly convenient building size Con Fiberglass props nearly mandatory en gine durability problem pulls hard lines Jet Speed Pro Easy build easy fly very durable engines equipment readily avail able Con Pulls hard lines high fuel bills Very high noise levelEd FAI Speed Pro Standard inexpensive fuel long engine life equipment commercially avail able engines commercially available Con Fast ones hard fly pilot has turn around very fast Formula 40 Pro Standard fuel landing gear required easily available engines least ex pensive minipipe Con Few disadvantages personal opinion start can made class except possibly 1/2A highest probability success will come D Jet F-40 Once have picked class next task construct trainer purpose trainer learn fly relatively high wing loading under circumstances simulate encoun tered flying full-up Speed model secondary objective gain experience engine fuel system good Speed trainer Texas Quickie Rat published August 1986 sue Model Aviation available Full-Size Plan No 524 $2 75Ed Build per plans install appropriate control system class allows Monoline single-line con trol urge put such system trainer learn fly single-line system worth increase several miles per hour class stronger safer two lines easier install airplane easier fly especially D Jet classes pull hard engine use high-performance 40 equipped fuel exhaust system class requires plan use B Id use suction uniflow-type tank full tuned pipe F-40 D Id use either pres sure tank bladder whichever prefer ence flying trainer start out 031 x 60-ft Monoline 018 x 60-ft two-line After flying normally becomes simple task start fly ing pylon Finally flying py lon second nature start shortening lines until rotational speed time takes follow model through lap approxi mately same intended class follows Aseven laps/l05 see Bsix laps/95 see Dsix laps/9O see Jetsix laps/90 see F-40seven laps/Il sec FAIlO laps/15 see selecting design/setup Competi tion model consistency important el ement considered basic elements right good performance will naturally follow Three basics good Speed model First solid engine mounting second reli able consistent fuel system third stable fly ing characteristics requirement solid engine mount ing easily met use full metal pan construction Use full pan top sur face accurately trued accu rately located mounting holes provides solid mounting required engine reach full power reliable fuel system can provided several ways classes use full tuned pipe suction uniflow setup seems best solution classes minipipes either hard tank bladder will work well choice between two mostly function whether have reliable teammate can either set needle fly hard tank using untimed crankcase pressur ization has advantage allowing preset nee dle valve pit crew needs start model let go also possible hard tank adjust needle valve given amount between flights disadvantages may sometimes encounter problems fuel foaming surging takeoff Continued page 167 76 Model Aviation Control Line Speed Gene Hempel 301 N Yale Dr Garland TX 75042 Carol Sugar Lakeland FL new FAI Speed planea Rossi 15-powered asym metrical-winged sidewinder member Polk County RC Club Hope dont expel him building CL model Tom Blankmann Stuart FL holds two ver sions Formula 40 Speed plane Fred Joyce Margarido Freemont CA Small ST 40-powered Large new OPS 65-powered 0 Speed ship uses K&B 65 engine tion competitors need stay alert aware options Listen learn After flying Old-Time Stunt blustery morning weather Saturday Expert competitors hung around try sort out com bination would work similar condi tions predicted next day high winds cool temps settled depitched three-blade Holly prop rich ground needle setting using suction rather uniflow setup allowed controlled speed beginning pattern reduced windup con secutive maneuvers below 450 elevation also allowed engine pick up speed tank emptied power available during verticals overheads Clover too setup working neatly packed up went Out dinner Unfortunately caine time fly first round Sunday wind died completely temperature also much warmer Paul Walker went up first suffered through dead-air flight turned out high scorer nonetheless flew right after Paul should have learned something Unfortunately did slightly lean enginewhich overcame its natural tendency richen rising tempera ture didnt tweak nearly enough produce additional airspeed necessary overcome calm air resulted situations judges ran helter-skelter trying guess might choose fly next maneuver idea myselfi result bunch extra level laps flameout clo ver bottom line 50 points behind top seed official flight go key word last sentence offi cial Heres really screwed up first up second round done quick dirty retrln suit still air prop pitch leaner needle setting worked great during lunch break felt confident could get back hunt good flight guessed Time flyand down goes sun up goes wind splash comes rain foolishiy went ahead took off after shaking head disgust clear rain out eyes signaled ficial wasted last flight conditions entirely unpreparedand under no chance overcoming Pauls lead two opportunities avoid blowing chances First could have called attempt before starting Second after taking off could have waved off flight once became ob vious conditions unacceptable either case would have moved down two places flight order time either regroup await return calmer conditions Remember AMA rule book allows three attempts two official flights youre po sition absolutely positively have nail dont put nail coffin Swal low pride call attempt come back prepared CL Speed/Hempel Continued page 76 Bladder tanks light have no problems fuel foaming surging easy con struct suffer disadvantage requiting good hand needle valve believe no speed advantage either way current Class D model has run over 200 mph both types tank Stable flying characteristics function design adequate moment arms areas UU I I U U U U U U U U U U U U U U U U U U U U U U U U U U U U I I U U SIG GLOW FUEL MANUFACTURED WITH THE PUREST FINEST QUALITY INGREDIENTS AVAILABLEI * Superior Igniters Improve starting idle acceleration Youll notice power bargain fuels * Special Detergents Promote clean burning preventU residue buildup * Rust Inhibitors Protect engines corrosion After run oil needed enginesI *I *U Film Strength Additives Increase lubricity provide extra lean run protection Anti-Wear Additives Help keep engines running peak performance longer * Satisfaction Guaranteed SIG CHAMPION 2-STROKE FUEL FREIGHT FREE SHIPPINGON ORDERS OVER$1500 ECT PINTQUARTGALLON55 GAL DRUM 0% Nitromethane$315$450$1075 95 5% Nitromethane$365$525$1275 95 10% Nitromethane$415$550$1475 95 15% Nitromethane$430$635$1675 95 25% Nitromethane$515$795$2195 95 35% Nitromethane $595 $925 $2695 $66995 SIGPREMIUM 4-STROKE FUEL 10% Nitromethane 5 $29995 15% Nitromethane 5 $36495I THE CHOICE OF CHAMPION FLYERS over 20 years SIG has blending finest quality model engine fuel available using finest quality ingredients instance Methanol use 995% pure very best gradeU money can buy also use real 100% pure INitromethane get full measure youveI paid based honest percentage-of-volume Imethod percentage weight SIG fuels conBakers purest AA Castor Oil tam 50-50 blend new improved Klotz Techniplate Synthetic Racing Oil maximum engine lubrication protection Based experience sincerely believe finest quality fuel can made price dont take word try some judge Uyourself lPioeo toOject ohengeothoot notice See dealer first available order direct Call 800-247-5008 toll free orders Latest Catalog $300 MANUFACTURING CO Montezuma IA 50171 SPECIAL FOR THIS ISSUE ONL Y JLC Kit #31JA LANE SPECIAL Kit #32 Fully Aerobatic Complete Kit .Great Around Plane compi Kit 5795 X100% 3995 Money Back Guarantee 60 wing 41 iength 830 sq wing area715 wing 58 length 930 sq wing area 4860 engine 8090 four stroke 4 iba 5 oz. 4 channei4840 engine 60-90 four stroke 6 be. 4 chennei Bolt kite feature formed cowiing pre-bent ending gear hardware canopy die-cot 8 pre-cut pant fuli aize pians compiete instruction book Send check MO piane choice Pdce inciudet shipping 8-handling coo shipments aiso avaiisbie Mon-Fri 900-700 900-200 iCSTi 314-928-777 Skyline Hobbys Mfg 49 Treebeard Circle St Charles MO 63303 September 1988 167 balance combination construction em phasize accurate alignments good technique control system installation An excellent example good design practice Pink Lady Formula 40 presented De cember 1987 issue Model Aviation Full-Size Plan No 573$4 Engine selection preparation real heart competition setup Current Speed en gines competitive basic design days Speed secret long past secrets making strong engine 1 Freerunning crankshaft good bearings 2 Prop erly fitted piston sleeve 3 Good cylinder head fit 4 Accurately fitted free-running disk rotor rear-intake engines basics right engine fed right amount fuel will make competi tive amount power equipment pro cesses check andif necessarycorrect items beyond scope article several individuals business en gine tuning will set up engine have found engines generally pretty close being right come out box services engine specialists needed rebuild time comes list commonly used Speed en gines includes A/FAI Speed OPS 15 Rossi 15 Mk Ill K&B/Cox 15 Conquest Supertigre X-l5 RI cur rent AMA class record-holder B Speed OPS 29 Supertigre X-29 current AMA class record-holder K&B 49 RI D Speed 05 65 VR DF current AMA class record-holder K&B 65 OPS 65 Ducted Fan Picco 65 Ducted Fan Rossi 65 Ducted Fan F-40 Speed OS 40 VR-P K&B 65 Picco 40 RI/RE Supertigre X-40 RI current AMA class record-holder Jet Speed Dyna-Jet current AMA class record-holder fuel engines no se crets piston engines three basic ingredi ents methanol nitromethane oil Jets two basics nitromethane propy lene oxide Typical fuel formulas given low Break-in/test/F-40 40% methanol 40% nitromethane 20% oil 10% synthetic plus 10% castor Contest piped engines classes B 15% methanol 65% nitromethane 20% oil 17% synthetic plus 3% castor Contest class D 0%-5% methanol 75%80% nitromethane 20% oil 17% synthetic plus 3% castor Jet 50% nitromethane 50% propylene oxide recommend using less 20% oil piston engines possible run less smallest mistake setting needle too lean will likely result damaged en gine also really like use castor oil com bination synthetic pil produces sig nificant extra protection primarily connect ing rod/crankpin bearing preceding discussion have skipped over Jets mostly because basics bit dif ferent essentially engine use Dyna-Jet stock form has re mained essentially unchanged since 1948 HoW ever engine/event Speed secret alive well Jet preferred class suggest follow trainer route recip-engine classes using Phire Phart published column August 1986 issue trainer trainer use stock engine fuel mix 80% methanol 20% methyl ethyl ke tone MEK After can fly pylon etc start experimenting high-lift valve re tainers nitromethane/propylene oxide fuel stock Dyna-Jet nitro/propylene using re tainer 06 over stock will run about 170 mph want go really fast Jet best information have found Super Burp con struction article December 1978 Model Avi ation final observation best investment can make starting Speed join North American Speed Society publishes quarterly newsletter Speed Times ab solute gold information model design engine setup parts/hardware supply sources Membership Open members $20/year address North American Speed Society Box 82294 North Bumaby BC Canada V5C 5P7 thanks Bill Nusz taking time spending effort necessary give us very enlightening observations Have funfly Speed ternfic how-to description steps take setting up stock engine top performance Bill Hagers RC Pylon Racing column month Although addresses Sport Pylon Racing information perfectly good CL Speed too RMcM CL Racing/Ballard Continued page 77 ture / plywood will note bellcrank off center pushrod coming down centerline winga necessity internally mounted elevator controls PRODUCTS FOR THE DI$CERNNG MODELER Complete Line Exhaust Systems * Tuned Pipes led Tuned Pipes * Headers Venturi Mufflers Expansion Mufflers copter Ball Mufflers * Specialized Exhaust Systems Unsurpassed Wn C Another photos shows wing mounted fuselage /16 plywood applied over entire frontal section back almost rear wing addition can see pushrod passing through fuselage enclosed alu mmum tube elevator horn attached right below stab Half-A glow plug clip have shown ex cellent hot thumb can made very quickly inexpensively addition brass strip soldered typical Cox VzA glow plug clip addition washer soldered bottom added brass strip aid provid ing positive location plugs center post particular unit can also used Scale Rac ing addition Mouse Performance results have just received some Racing time results recent meet Califor nia show Scale Race times 557 10 first-placer Mike Shahan 61184 secondplace Bill Lee Rat Race saw spectacular 43092 win 50513 second place both being Shahan-Fogg entries AMA Slow Rat showed Fox/Repp team winning 81020 Bill Lee second 81778 John MeCollum also included West Coasts recent Sebree Hayes Memorial AAA Meet Scale Racing won Vic Gamer time 61350 Mike Shahan second 62190 Rat Race won Bob Fogg 44684 Howard Shahan came next 45060 Slow Rat some sparkling times led Vie Garner 60863 Fox/Repp team 63560 Good piloting techniques am enclosing two photographs recent California contest lot three-up flying photo shows three pilots John McCollum ready pass Dave Brown Note John has come up behind him starting ralse fly ing hand up get clear Daves head smaller pilots essence trapped hind taller pilots hand extremely low As comes up behind taller pilot should ralse flying hand up near bead bring alrcraft over minimum amount speed loss smooth pass other photo shows three pilots pi lot left actually blocking other two Bob Kerr wearing Livermore Flyer shirt way behind planenote over left However hand behind Howard Sha han should up over top head plane will catch up properly manmum time alrspeed loss arm position shown actually slowing drag168 Model Aviation